Realme V21 vs Redmi K90 Ultra
Comparing the Realme V21 (2022) and the Redmi K90 Ultra (2026) on specs and benchmarks. By overall MobileRank rating, the Redmi K90 Ultra leads — 61/100 vs 10/100 (a 51-point difference). Key differences: the Redmi K90 Ultra has the bigger battery (8550 mAh vs 5000); the main camera is 13 MP vs 50 MP; the Redmi K90 Ultra has NFC for contactless payments, the Realme V21 doesn't.
Realme V21
Redmi K90 Ultra
- Better design/ergonomics (50/100 vs 16/100)
- Bigger battery: 8550 vs 5000 mAh
- Better main camera: 50MP vs 13MP
- Higher performance (65/100 vs 0/100)
- Better camera (32/100 vs 0/100)
- Longer battery life (77/100 vs 36/100)
- Better display (100/100 vs 0/100)
- Better value for money (81/100 vs 55/100)
Comparing the Realme V21 vs the Redmi K90 Ultra, the Redmi K90 Ultra scores 51 points higher (61/100 vs 10/100). In the "performance" category, the Redmi K90 Ultra leads (65/100 vs 0/100). In the "camera" category, the Redmi K90 Ultra leads (32/100 vs 0/100). In the "battery" category, the Redmi K90 Ultra leads (77/100 vs 36/100). In the "value for money" category, the Redmi K90 Ultra leads (81/100 vs 55/100). In the "performance" category, the Redmi K90 Ultra significantly outperforms the Realme V21 (65/100 vs 0/100). In the "display" category, the Redmi K90 Ultra significantly outperforms the Realme V21 (100/100 vs 0/100). In the "camera" category, the Redmi K90 Ultra significantly outperforms the Realme V21 (32/100 vs 0/100). In the "battery" category, the Redmi K90 Ultra significantly outperforms the Realme V21 (77/100 vs 36/100). In the "design" category, the Realme V21 significantly outperforms the Redmi K90 Ultra (50/100 vs 16/100). In the "value for money" category, the Redmi K90 Ultra notably outperforms the Realme V21 (81/100 vs 55/100).
| Specification | Realme V21 | Redmi K90 Ultra | |
|---|---|---|---|
| Processor | — | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | — | 2760000 | |
| Geekbench Single | — | 3050 | |
| Geekbench Multi | — | 9300 | |
| Display | 6.6" TFT | 6.8" AMOLED | |
| Resolution | 720x1612 | 1280x2772 | |
| Refresh rate | — | 165 Hz | |
| Battery | 5000 mAh | 8550 mAh | |
| Charging | — | 100W | |
| Main camera | 13 MP | 50 MP | |
| Ultrawide | 0 MP | 8 MP | |
| Front camera | 8 MP | 20 MP | |
| RAM | 4GB / 6GB / 8GB | 12GB / 16GB | |
| Storage | 128GB | 256GB / 512GB | |
| OS | Android 12, Realme UI 3.0 | Android 16 | |
| Brightness (peak) | — | 3500 nits | |
| NFC | no | yes | |
| Protection | — | IP68/IP69 | |
| Dimensions | — | 162.9×77.9×8.2 mm | |
| Weight | — | 227 g | |
| Price | — | $420 |
Realme V21
- Main: 13MP f/f/2.2
- Front: 8MP
Redmi K90 Ultra
- Main: 50MP f/1.7
- Ultrawide: 8MP
- Front: 20MP
Realme V21
- 6.6" TFT
- Resolution: 720x1612
- Refresh rate: —
Redmi K90 Ultra
- 6.8" AMOLED
- Resolution: 1280x2772
- Refresh rate: 165 Hz
Realme V21
- 5000 mAh
- No wireless charging
Redmi K90 Ultra
- 8550 mAh
- Wired: 100W
- No wireless charging
Realme V21
Price unknownperformance
In the "performance" category, the Redmi K90 Ultra significantly outperforms the Realme V21 (65/100 vs 0/100).
display
In the "display" category, the Redmi K90 Ultra significantly outperforms the Realme V21 (100/100 vs 0/100).
camera
In the "camera" category, the Redmi K90 Ultra significantly outperforms the Realme V21 (32/100 vs 0/100).
battery
In the "battery" category, the Redmi K90 Ultra significantly outperforms the Realme V21 (77/100 vs 36/100).
design
In the "design" category, the Realme V21 significantly outperforms the Redmi K90 Ultra (50/100 vs 16/100).
value for money
In the "value for money" category, the Redmi K90 Ultra notably outperforms the Realme V21 (81/100 vs 55/100).
Which is better: the Realme V21 or the Redmi K90 Ultra?
The Redmi K90 Ultra significantly outperforms the Realme V21 by 51 points (61/100 vs 10/100).
What is the rating of the Realme V21 and the Redmi K90 Ultra?
The Realme V21 has a MobileRank rating of 10/100, the Redmi K90 Ultra — 61/100.
Which has the better camera: the Realme V21 or the Redmi K90 Ultra?
The Redmi K90 Ultra leads on camera score (32/100 vs 0/100).
Which is more powerful: the Realme V21 or the Redmi K90 Ultra?
The Redmi K90 Ultra leads on performance (65/100 vs 0/100).
Should you choose the Realme V21 over the Redmi K90 Ultra?
The Realme V21 is a better fit for everyday use. The Redmi K90 Ultra is a better fit for active users, those who care about battery life, budget-conscious buyers.